Improvement in dip-pipes in hydraulic mains for gas works



JAMES HANNAN.

Improvement in Dip Pipe in Hydraulic Main for Gas Works.

No. 125,733, mma April16,1872.

UNITED STATES PATENT QFFIGE.

JAMES HANNAN, OF GALLIPOLIS, ASSIGNOR TO HIMSELF AND ROBERT T.

COVERDALE, OF CINCINNATI, OHIO.

IMPROVEMENT IN DIP-PIPES IN HYDRAULIC MAINS FOR GAS WORKS.

Specification forming part of Letters Patent No. 125,733, dated April16, 1872.

I, J AMES HANNAN, of Gallipolis, Gallia county, State of Ohio, haveinvented a certain new and useful device for independently regulatingthe flow of gas from each dip in hydraulic mains for gas-works, of whichthe following is a specification:

Nature and Objects of Invention.

' I the object of my invention being to render each dip-pipe independentof the others in the same main, and provide a very simple device forthis purpose.

Description of the Accompanying Drawing. Figure 1 is a vertical sectionof a sufficient portion of gas apparatus to illustrate my invention.Fig. 2 is a cross-section.

General Description.

A represent a dip-pipe, connected through pipes B and O with thegas-generator, and'endiug in the customary hydraulic main D. By theintroduction of the cup E, secured to the top of the dip-pipe in themanner shown, an

annular chamber is provided for the occupancy of water for a seal Aninverted cup, F, operates within this annular seal, and supports a rod,G, which passes entirely through the dip-pipe, and terminates in acircular cup, H, adapted to surround the lower end of the dippipe, asshown in Fig. 1.

The cup F, rod G, and cup H, are operated by lover I, or other suitablemeans, in such a way as to close the end of the dip-pipe by hydraulicsealing, asshown in Fig. 2, (when it is necessary to recharge or repairthe retortto which it is connected,) or to open the end of the dip-pipeentirely, as shown in Fig. 2, to

permit the free escape of gas, and avoid back pressure upon thegenerating apparatus.

I do not claim, broadly, an hydraulic seal at the upper end of adip-pipe; nor a movable water-cup, in which the lower end of the dippipemay be immersed; but' What I do claim, and desire to secure by LettersPatent, is

The fixed or stationary dip-pipe A, encircled at its upper end by theopen water-cup E, in combination with the movable and connected cups Fand. H, arranged and operating substantially in the manner specified.

In testimony of which invention I hereunto ,set my hand.

JAMES HANNAN.

Witnesses J. J. PooL, WM. NASH.

